EP0139131A2 - Soupape de sûreté - Google Patents

Soupape de sûreté Download PDF

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Publication number
EP0139131A2
EP0139131A2 EP84109437A EP84109437A EP0139131A2 EP 0139131 A2 EP0139131 A2 EP 0139131A2 EP 84109437 A EP84109437 A EP 84109437A EP 84109437 A EP84109437 A EP 84109437A EP 0139131 A2 EP0139131 A2 EP 0139131A2
Authority
EP
European Patent Office
Prior art keywords
valve
inlet
valve element
safety valve
bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84109437A
Other languages
German (de)
English (en)
Other versions
EP0139131A3 (en
EP0139131B1 (fr
Inventor
Dieter Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0139131A2 publication Critical patent/EP0139131A2/fr
Publication of EP0139131A3 publication Critical patent/EP0139131A3/de
Application granted granted Critical
Publication of EP0139131B1 publication Critical patent/EP0139131B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
    • F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/24—Operating or controlling mechanisms
    • A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
    • A62C2/243—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts with frangible elements
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/24—Operating or controlling mechanisms
    • A62C2/246—Operating or controlling mechanisms having non-mechanical actuators
    • A62C2/248—Operating or controlling mechanisms having non-mechanical actuators pneumatic
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
    • E05F15/56—Power-operated mechanisms for wings using fluid-pressure actuators for horizontally-sliding wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/404—Function thereof
    • E05Y2201/41—Function thereof for closing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/43—Motors
    • E05Y2201/448—Fluid motors; Details thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/25—Emergency conditions
    • E05Y2800/254—Emergency conditions the elements not functioning in case of emergency
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/34—Form stability
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E05Y2900/134—Fire doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/514—Application of doors, windows, wings or fittings thereof for vehicles for ships
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/531—Doors

Definitions

  • the invention relates to a safety valve for pneumatically or hydraulically operated devices that must be brought into a predetermined state or kept in a predetermined state in the event of a fire, in particular for fire doors, with an inlet and an outlet for the working fluid, a between these arranged valve seat, on which a valve element movable between a sealing position and an open position can be brought to the sealing system, and with a vent opening which is connected to the outlet when the valve element is in the sealing position and opposite the inlet and the valve element in the open position Outlet is sealed.
  • Valves of this type are used, for example, in systems for operating fire protection doors on ships in order to apply compressed air to the control devices for the individual fire protection doors. If the valve element is in the sealing position, then the compressed air is Connection between the inlet and outlet is interrupted, and the outlet is connected to the vent opening, so that the compressed air located in the connecting region between the outlet and the control device can escape via the vent opening.
  • a safety valve is the aforementioned A rt according to the invention designed so that the adjacent to the valve seat from the inlet with Working fluid area of the valve element to be acted upon is smaller than the area away from the valve seat to be acted upon through the valve element from the inlet with working fluid, which delimits a control fluid receiving control cavity, that the control cavity is delimited by an insert which is at the inner end with the control cavity has connected through hole, the cross section of which is substantially larger than the minimum cross section of the connection between the inlet and the surface of the valve element remote from the valve seat, and that the through hole is sealed at the outer end by means of a heat-destructible trigger element.
  • the compressed air occurring at the inlet of the valve exerts a greater force on the surface facing the control cavity than on the surface adjacent to the valve seat due to the surface dimensions of the valve element, so that the valve element is normally in the open state and compressed air from the inlet can get to the outlet and thereby to the control device.
  • the safety valve according to the invention has a trigger element which can be destroyed by heat and which is reliably destroyed at temperatures occurring in the event of fire, which can be up to 1100 ° C., the destruction preferably occurring at temperatures between 100 ° C. and 120 ° C.
  • the control cavity is vented via the through hole and the valve element is thereby brought into its sealing position.
  • valve element In this sealing position, the valve element is held by the compressed air at the inlet, and in this position of the valve element, the outlet of the valve is vented via the ent Ventilation opening, that is, it is ensured that the downstream device is no longer supplied with compressed air even when the temperature increases as a result of the fire, which can be further ensured that both the valve seat and at least the part of the valve element brought into contact with it are made of stainless steel, so they cannot be damaged or leaked due to the high temperatures caused by the fire.
  • connection through the valve element which usually has a small cross section, has a smaller cross section than the through bore of the closure element, because only if the cross section of the through bore is larger than the minimum cross-section of the connection results in a safe and reliable function in the event of the trigger element being destroyed.
  • the release element can be pressed against a sealing plug by a spring, which, in this position, seals the through hole.
  • a particularly suitable trigger element is a closed glass ampoule containing a liquid with a low boiling point, which bursts when heated sufficiently and thus enables the closure plug to be displaced and thus the closing movement of the valve element.
  • Such glass ampoules have been used, for example, in sprinkler systems.
  • the minimum cross section of the connection must be smaller than the cross section of the through hole.
  • the minimum cross-sectional area of the connection is preferably not greater than half the cross-sectional area of the through hole.
  • the trigger element can seal the through hole against the ambient air, i.e. If the trigger element is destroyed, compressed air escapes into the ambient air.
  • the hydraulic fluid should of course not flow into the environment if the trigger element is destroyed.
  • the trigger element can therefore seal the through bore against a hydraulic fluid collecting container, i.e. the hydraulic fluid flows into the collecting container when the trigger element is destroyed.
  • the safety valve according to the invention is always open in normal operation, ie the valve element is held in its open position as a result of the pressure in the control cavity and only comes into its sealing position when the trigger element is destroyed, it is particularly expedient to provide a possibility of the functionality of the safety valve to be able to check without destroying the trigger element.
  • the control cavity or the through hole of the safety valve can be connected to an opening for connecting a test tap.
  • the test tap is normally closed, but is opened to test the function of the valve, so that a Condition that corresponds to that which occurs when the trigger element is destroyed. If the valve element is then moved into the closed position, it is proven that the safety valve is functional. If the test tap is then closed again, the pressure moving the valve element into the open position builds up again in the control cavity.
  • the safety valve according to FIG. 1 has a valve body consisting of a part 3 and a part 13.
  • the parts 3 and 13, preferably made of stainless steel, are sealingly connected to one another in a manner not shown, with the interposition of an O-ring.
  • an inlet 1 is provided to which a compressed air line can be connected.
  • a cylindrical opening extends coaxially from the inlet 1 and is connected to an outlet 18 via an opening in its side wall.
  • a valve element 2 is arranged coaxially, which is made of stainless steel and has a truncated cone-shaped sealing surface at its lower end, which in the illustrated sealing position of the valve element lies sealingly against a valve seat 20 formed in the transition from inlet 1 to the cylindrical opening .
  • a sealing body 4 is fastened to the valve element 2, which has an annular seal 16 on its lower surface and an annular seal 15 on its outer surface.
  • the connection between the sealing body 4 and the valve element 2 is made by a screw 5, the head of which rests on the upper surface of the sealing body 4 and which has a bore 14 connecting the inlet 1 to the space above the screw head.
  • the lower end of the bore 14 ends at a continuous inner bore of the valve element 2.
  • the part 13 has a recess which, together with the upper surface of the sealing body 4, forms a control cavity 22, from which a threaded bore extends upwards, into which an insert 12 is screwed.
  • the insert 12 has a blind hole at its upper end and receives a plug 11 therein. Furthermore, a cap element 10 is screwed onto the free end of the insert 12 and has lateral openings.
  • a spring 9 is supported, the lower end of which rests on the neck region of a closed glass ampoule 8 containing a liquid with a low boiling point and presses it against the sealing plug 11, so that the through hole 23 extending through the insert 12 also coexists With the help of the O-ring 7 arranged in the bottom surface of the blind plug 11 receiving the blind hole.
  • the safety valve shown in FIG. 1 can be installed, for example, in the compressed air supply line for the control device of a pneumatically actuated fire door, such a compressed air supply line usually being connected to a main ring line which supplies the control devices of different fire doors with compressed air.
  • valve element 2 since the area under pressure from the surface of the head of the screw 5 and the surface of the area of the sealing body 4 delimiting the control cavity 22 is larger than the lower annular surface of the valve element 2, the valve element is moved downward from the position shown into its open position in which the frustoconical sealing surface is located at a distance from the valve seat 20 and in which the ring seal 16 lies sealingly on the surface 21 and thus closes the central opening which forms the continuation of the inlet 1. In this position, the inlet 1 is connected to the outlet 18, but the connection between the outlet 18 and the vent opening 17 is interrupted. The control device is therefore supplied with compressed air from the outlet 18.
  • valve element 2 The compressed air acting on the lower surface of the valve element 2 therefore moves the valve element into the position shown in FIG. 1, whereby the connection between inlet 1 and outlet 18 is interrupted by means of the frustoconical sealing surface of the valve element 2 and the valve seat 20.
  • the inlet 18 is now vented via the vent opening 17 and thus compressed air still present is removed from the control device for the fire door.
  • the control device can therefore no longer open the fire door, even if leaks in valves and the like due to heating within the control device. occur.
  • both the valve element 2 and the valve seat 20, in particular the entire part 3 and most of the other parts of the safety valve, are made of stainless steel, no leakage can occur even when the valve is heated as a result of the fire, but the sealing effect is also achieved at temperatures of 1100 ° C still maintained. If a leak nevertheless occurs, this does not lead to a sufficient supply of compressed air to the control device for opening a door, because the outlet 18 is connected to the vent opening 17.
  • the test tap (not shown) connected to the opening 6 can be opened briefly. This opening of the test tap leads to a reduction in pressure in the control cavity 22, that is to say to a state which also occurs when the glass ampoule 8 is destroyed. If the valve is in a functional state, the valve element 2 is moved into the illustrated closed position in the manner described above in connection with the destruction of the glass ampoule 8 as a result of this pressure reduction, as a result of which the functionality of the safety valve is verified.
  • the safety valve shown in FIG. 2 corresponds essentially to that in its structure and its function Safety valve from Figure 1, but is used for use in hydraulically controlled devices.
  • the safety valve according to FIG. 2 has a valve body made of a part 25 and a part 36 serving as an insert.
  • the two parts are sealingly connected to one another in a manner not shown, with the interposition of an O-ring.
  • part 25 there is an inlet 24 for the supply of hydraulic fluid, which continues in the same way as in the safety valve according to FIG. 1 in a concentric central bore, an opening being provided in the wall for connection to the outlet 45.
  • a valve element 26 constructed in accordance with the valve element 2 from FIG. 1 and having a truncated cone-shaped sealing surface which bears against a valve seat 46 is arranged in the central bore.
  • valve element 26 and valve seat 46 that is to say part 25, made of stainless steel.
  • a sealing body 41 corresponding to the sealing body 4 from FIG. 1 with a lower ring seal 43 and an outer ring seal 42 is fastened by means of a screw 28 with a central bore 27 corresponding to the screw 5 from FIG.
  • a ventilation opening 44 to which a line (not shown) is connected, via which hydraulic fluid can be conducted into the collecting container 49.
  • part 36 there is a recess which, together with the upper surface of the sealing body 41 and the screw head 28, delimits a control cavity 48 from which a through hole 39, corresponding to the through hole 23 from FIG. 1, extends upwards into a blind hole.
  • a stopper 32 In this blind hole there is a stopper 32, the ent of a glass ampoule 35 speaking of the glass ampoule 8 from FIG. 1, as a result of the action of the spring 34 arranged in the cap element 33 having openings, it is pressed against the sealing plug 32 so that the lower surface thereof rests firmly on the O-ring 38.
  • an O-ring 37 In the circumferential wall of the sealing plug there is an O-ring 37 which lies sealingly against the wall of the blind hole.
  • An outlet opening 31 in part 36 is connected via a line 30 to the collecting container 49, and the outlet opening 31 communicates with the interior of the blind hole via a transverse bore, this transverse bore with sealing plugs 32 located on the O-ring 38 in sealing contact opens into the blind hole above the O-ring 37.
  • the mode of operation of the safety valve according to FIG. 2 corresponds to that of the safety valve from FIG. 1. If hydraulic fluid is therefore supplied via the inlet 24 to the safety valve according to FIG. 2, this brings or holds it due to the pressure on the lower surface of the valve element 26 initially in its sealing position. However, the hydraulic fluid enters the control cavity 48 as a result of the excess pressure through the central bore 27 and gradually builds up there a pressure corresponding to the pressure at the inlet 24.
  • valve element 26 moves into its open position in which the inlet 24 is connected to the outlet 24 and the vent opening 44 as a result of the support of the Ring seal 43 is sealed on the surface 47 with respect to the outlet 45.
  • the hydraulic fluid under pressure in the control cavity 48 and the through bore 39 causes the sealing plug 32 in FIG. 2 to move upward until it comes to bear against the annular surface of the cap element 33 projecting into the blind hole.
  • the O-ring is located above the transverse bore so that hydraulic fluid can flow out of the control cavity 48 via the through bore 39, the transverse bore, the outlet opening 31 and the line 30 into the collecting container 49.
  • the pressure in the control cavity 48 drops, and the pressure on the lower surface of the valve element 26 moves it into the sealing position shown in FIG. 2, in which hydraulic fluid can flow out of the control device connected to the outlet 45 via the ventilation device 44.
  • the cross-section or the cross-sectional area of the through bore 39 must be significantly larger than the cross-section or cross-sectional area of the bore 27 so that there is an effective pressure drop in the control cavity 48.
  • a threaded bore 29 is provided which is connected via 'a bore of the through hole 39 and to which a test cock is connected.
  • connection between inlet 1, 24 and control cavity 22, 48 should have the smallest possible cross section, so that when the safety valve responds, that is to say when the Glass ampoule 8, 35 as little working fluid as possible exits from inlet 1 or 24 through this bore. If too much working fluid escaped, there would be a significant drop in pressure in the main fluid line, which is undesirable.
  • the cross section of these holes must of course be sufficient to build up the required operating pressure in the control cavity within a reasonable period of time. It has been shown that, for example when using safety valves according to FIG. 1 in pneumatic actuation devices for fire doors on ships , a minimum diameter of the circular connecting bore between inlet 1 and control cavity 22 of 0.22 mm to 0.5 mm is expedient.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Safety Valves (AREA)
EP84109437A 1983-08-17 1984-08-08 Soupape de sûreté Expired EP0139131B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8323645U 1983-08-17
DE8323645 1983-08-17

Publications (3)

Publication Number Publication Date
EP0139131A2 true EP0139131A2 (fr) 1985-05-02
EP0139131A3 EP0139131A3 (en) 1985-05-29
EP0139131B1 EP0139131B1 (fr) 1988-02-17

Family

ID=6756206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109437A Expired EP0139131B1 (fr) 1983-08-17 1984-08-08 Soupape de sûreté

Country Status (2)

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EP (1) EP0139131B1 (fr)
DE (2) DE8323645U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629595A1 (de) * 1986-08-30 1988-03-10 Dieter Schmidt Vorichtung zum oeffnen einer sicherheits-schiebetuer, insbesondere feuertuer oder schott
DE4236623A1 (de) * 1992-10-29 1994-05-05 Manfred Dipl Ing Niegl Notantrieb
FR2791119A1 (fr) * 1999-03-16 2000-09-22 Vti Ventil Technik Gmbh Dispositif de securite pour un reservoir a gaz pressurise
EP1239202A3 (fr) * 2001-03-09 2003-07-30 Dynetek Industries Ltd Système de déclenchement pour dispositif de surpression thermique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601885A1 (de) * 1985-01-25 1986-07-31 Henning 2000 Hamburg Löher Schutzventilanordnung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT23267B (de) * 1905-02-28 1906-02-26 Franz Schoen Bremsschlitten für Eisenbahnfahrzeuge.
DE503463C (de) * 1929-01-22 1930-07-23 Louis Renault Vorrichtung zum selbsttaetigen Schliessen von Vorhaengen oder Tueren bei Ausbruch eines Brandes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT23267B (de) * 1905-02-28 1906-02-26 Franz Schoen Bremsschlitten für Eisenbahnfahrzeuge.
DE503463C (de) * 1929-01-22 1930-07-23 Louis Renault Vorrichtung zum selbsttaetigen Schliessen von Vorhaengen oder Tueren bei Ausbruch eines Brandes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629595A1 (de) * 1986-08-30 1988-03-10 Dieter Schmidt Vorichtung zum oeffnen einer sicherheits-schiebetuer, insbesondere feuertuer oder schott
DE4236623A1 (de) * 1992-10-29 1994-05-05 Manfred Dipl Ing Niegl Notantrieb
FR2791119A1 (fr) * 1999-03-16 2000-09-22 Vti Ventil Technik Gmbh Dispositif de securite pour un reservoir a gaz pressurise
EP1239202A3 (fr) * 2001-03-09 2003-07-30 Dynetek Industries Ltd Système de déclenchement pour dispositif de surpression thermique

Also Published As

Publication number Publication date
EP0139131A3 (en) 1985-05-29
DE8323645U1 (de) 1983-12-08
EP0139131B1 (fr) 1988-02-17
DE3469345D1 (en) 1988-03-24

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